高频拓展处理技术在港东二区五断块的应用  

Application of high frequency extension processing in Block 5 of the second area of Gangdong

作　　者：张会卿[1] 

机构地区：[1]大港油田勘探开发研究院,天津300280

出　　处：《油气地球物理》2015年第2期20-23,共4页Petroleum Geophysics

基　　金：国家重大专项"高含水油田提高采收率新技术"(2008ZX05010)

摘　　要：港东二区五断块为曲流河沉积,砂体厚度薄,常见砂泥交互沉积,常规地震资料分辨能力有限,无法满足构造和储层研究的需要。反褶积处理方法由于受地震子波求取的不确定性影响,在实际应用中效果较差。高频拓展处理技术采用压缩子波的途径,在提高分辨率的同时保持了原始地震数据的时频特性和相对振幅关系,层间反射细节得到丰富。经已知井验证,吻合程度较高,为砂体预测提供了可靠的基础数据。The block 5 of the second area of Gangdong is meandering river deposit, the sand body is thin and the al- ternating deposits of the sand and mud are common, the limited resolution of the conventional seismic data could not meet the requirements of the research of the structure and reservoir. The deconvolution processing has a worse result in the actual application as the uncertainty of the seismic wavelet. The property of the time-frequency and the relation of the relative amplitude of the initial seismic data are preserved and the details of the intrabed reflection are improved by the high frequency extension processing which use the compact wavelet while the resolution is im- proved. The results has good match with the well information and provided reliable basic data for the sand body prediction.

关 键 词：反褶积处理 高频拓展处理 分辨率 时频特性 港东二区五断块 

分 类 号：P618.130.2[天文地球—矿床学]